private bool TryPrepareRequest(
IHttpRequestParameters requestParameters,
RateLimitTrackerMode rateLimitTrackerMode,
ITwitterCredentials credentials,
out ITwitterQuery twitterQuery)
{
credentials = credentials ?? _credentialsAccessor.CurrentThreadCredentials;
if (credentials == null)
{
throw new TwitterNullCredentialsException();
}
twitterQuery = _twitterQueryFactory.Create(requestParameters.Query, requestParameters.HttpMethod, credentials);
twitterQuery.Timeout = twitterQuery.Timeout = requestParameters.Timeout ?? twitterQuery.Timeout;
var beforeQueryExecuteEventArgs = new QueryBeforeExecuteEventArgs(twitterQuery);
if (rateLimitTrackerMode == RateLimitTrackerMode.TrackOnly ||
rateLimitTrackerMode == RateLimitTrackerMode.TrackAndAwait)
{
// Use the RateLimitCacheManager instead of RateLimitHelper to get the queryRateLimits to ensure the cache is up to date!
var credentialRateLimits = _rateLimitCacheManager.GetCredentialsRateLimits(twitterQuery.TwitterCredentials);
IEndpointRateLimit queryRateLimit = null;
// If we were not able to retrieve the credentials few ms before there is no reason why it would work now.
if (credentialRateLimits != null)
{
queryRateLimit = _rateLimitCacheManager.GetQueryRateLimit(requestParameters.Query, twitterQuery.TwitterCredentials);
}
var timeToWait = _rateLimitAwaiter.GetTimeToWaitFromQueryRateLimit(queryRateLimit);
twitterQuery.CredentialsRateLimits = credentialRateLimits;
twitterQuery.QueryRateLimit = queryRateLimit;
twitterQuery.DateWhenCredentialsWillHaveTheRequiredRateLimits = DateTime.Now.AddMilliseconds(timeToWait);
_tweetinviEvents.RaiseBeforeQueryExecute(beforeQueryExecuteEventArgs);
if (beforeQueryExecuteEventArgs.Cancel)
{
twitterQuery = null;
return false;
}
if (rateLimitTrackerMode == RateLimitTrackerMode.TrackAndAwait)
{
_rateLimitAwaiter.Wait(timeToWait);
}
}
else
{
_tweetinviEvents.RaiseBeforeQueryExecute(beforeQueryExecuteEventArgs);
if (beforeQueryExecuteEventArgs.Cancel)
{
twitterQuery = null;
return false;
}
}
_tweetinviEvents.RaiseBeforeExecuteAfterRateLimitAwait(beforeQueryExecuteEventArgs);
return true;
}
public void RaiseQueryBeforeExecuteAfterRateLimitAwait(object sender, QueryBeforeExecuteEventArgs args)
{
this.Raise(sender, QueryBeforeExecuteAfterRateLimitAwait, args);
}
private bool TryPrepareRequest(
string query,
HttpMethod httpMethod,
RateLimitTrackerOptions rateLimitTrackerOption,
ITwitterCredentials credentials,
out ITwitterQuery twitterQuery)
{
credentials = credentials ?? _credentialsAccessor.CurrentThreadCredentials;
if (credentials == null)
{
throw new TwitterNullCredentialsException();
}
twitterQuery = _twitterQueryFactory.Create(query, httpMethod, credentials);
var beforeQueryExecuteEventArgs = new QueryBeforeExecuteEventArgs(twitterQuery);
if (rateLimitTrackerOption == RateLimitTrackerOptions.TrackOnly ||
rateLimitTrackerOption == RateLimitTrackerOptions.TrackAndAwait)
{
var timeToWait = _rateLimitAwaiter.TimeToWaitBeforeTwitterRequest(query, twitterQuery.TwitterCredentials);
twitterQuery.DateWhenCredentialsWillHaveRequiredRateLimits = DateTime.Now.AddMilliseconds(timeToWait);
_tweetinviEvents.RaiseBeforeQueryExecute(beforeQueryExecuteEventArgs);
if (beforeQueryExecuteEventArgs.Cancel)
{
twitterQuery = null;
return false;
}
if (rateLimitTrackerOption == RateLimitTrackerOptions.TrackAndAwait)
{
_rateLimitAwaiter.Wait(timeToWait);
}
}
else
{
_tweetinviEvents.RaiseBeforeQueryExecute(beforeQueryExecuteEventArgs);
if (beforeQueryExecuteEventArgs.Cancel)
{
twitterQuery = null;
return false;
}
}
_tweetinviEvents.RaiseBeforeExecuteAfterRateLimitAwait(beforeQueryExecuteEventArgs);
return true;
}
private HttpClient GetHttpClient(ITwitterQuery twitterQuery)
{
if (twitterQuery == null)
{
SetStreamState(StreamState.Stop);
return null;
}
twitterQuery.Timeout = TimeSpan.FromMilliseconds(Timeout.Infinite);
var queryBeforeExecuteEventArgs = new QueryBeforeExecuteEventArgs(twitterQuery);
_tweetinviEvents.RaiseBeforeQueryExecute(queryBeforeExecuteEventArgs);
if (queryBeforeExecuteEventArgs.Cancel)
{
SetStreamState(StreamState.Stop);
return null;
}
return _httpClientWebHelper.GetHttpClient(twitterQuery);
}
public void RaiseQueryBeforeExecute(object sender, QueryBeforeExecuteEventArgs args)
{
this.Raise(sender, QueryBeforeExecute, args);
}
public void RaiseBeforeExecuteAfterRateLimitAwait(QueryBeforeExecuteEventArgs queryExecutedEventArgs)
{
this.Raise(QueryBeforeExecuteAfterRateLimitAwait, queryExecutedEventArgs);
}
public void RaiseBeforeQueryExecute(QueryBeforeExecuteEventArgs queryAfterExecuteEventArgs)
{
this.Raise(QueryBeforeExecute, queryAfterExecuteEventArgs);
}
private StreamReader CreateStreamReaderFromWebRequest(WebRequest webRequest)
{
if (webRequest == null)
{
SetStreamState(StreamState.Stop);
return null;
}
StreamReader reader = null;
try
{
var twitterQuery = _twitterQueryFactory.Create(webRequest.RequestUri.AbsoluteUri);
var queryBeforeExecuteEventArgs = new QueryBeforeExecuteEventArgs(twitterQuery);
_tweetinviEvents.RaiseBeforeQueryExecute(queryBeforeExecuteEventArgs);
if (queryBeforeExecuteEventArgs.Cancel)
{
SetStreamState(StreamState.Stop);
return null;
}
// TODO : LINVI - THIS CODE HAS CHANGED AND NEEDS TO BE CHECKED WITH ASP.NET
var responseStream = _webHelper.GetResponseStreamAsync(webRequest).Result;
if (responseStream != null)
{
reader = new StreamReader(responseStream, Encoding.GetEncoding("utf-8"));
}
}
catch (WebException wex)
{
HandleWebException(wex);
}
catch (Exception ex)
{
if (ex is ArgumentException)
{
if (ex.Message == "Stream was not readable.")
{
webRequest.Abort();
}
}
_lastException = ex;
SetStreamState(StreamState.Stop);
}
return reader;
}
private bool TryPrepareRequest(
string query,
HttpMethod httpMethod,
RateLimitTrackerOptions rateLimitTrackerOption,
ITwitterCredentials credentials,
out ITwitterQuery twitterQuery)
{
twitterQuery = _twitterQueryFactory.Create(query, httpMethod, credentials ?? _credentialsAccessor.CurrentThreadCredentials);
var beforeQueryExecuteEventArgs = new QueryBeforeExecuteEventArgs(twitterQuery);
_tweetinviEvents.RaiseBeforeQueryExecute(beforeQueryExecuteEventArgs);
if (beforeQueryExecuteEventArgs.Cancel)
{
twitterQuery = null;
return false;
}
if (rateLimitTrackerOption == RateLimitTrackerOptions.TrackAndAwait)
{
_rateLimitAwaiter.WaitForCurrentCredentialsRateLimit(query);
}
return true;
}
public void RaiseBeforeQueryExecute(QueryBeforeExecuteEventArgs queryAfterExecuteEventArgs)
{
_queryBeforeExecuteWeakEvent.Raise(this, queryAfterExecuteEventArgs);
}
